October payroll checks: NICs, minimum wage records, and year-end prep

October sits at an awkward point in the UK payroll calendar. The tax year is halfway through, the year-end feels far away, and it is tempting to let payroll run on autopilot until January. Resist that temptation. October is the ideal moment for a mid-year payroll health check, because anything you catch now can be corrected calmly rather than in the year-end rush.

Here are the checks worth running this month.

NICs: confirm the right rates are being applied

National Insurance rates and thresholds change often enough that payroll software usually keeps up, but the human settings do not always. Check that every employee is on the right NIC category letter. The classic errors are all familiar: a young employee who passed 21 but is still on a younger-worker rate, an apprentice whose apprentice rate expired, or a new director set up on the standard employee threshold when directors have their own annual calculation.

Also review any salary sacrifice arrangements. They remain legitimate and valuable, but the paperwork and payroll treatment must match what was actually agreed. A salary sacrifice that was never formalised is just a pay cut with extra steps, and HMRC takes a dim view of the difference.

Minimum wage: check your records, not just your rates

Most employers know the current minimum wage rates and pay them. Fewer employers keep the records that prove it. HMRC enforcement officers do not just ask what rate you pay; they ask for the evidence.

Your records should show hours worked and pay received for each worker, kept for at least three years. Watch for the traps that drag an effective rate below the legal minimum: unpaid trial shifts, deductions for uniforms or equipment that reduce take-home pay, time spent travelling between assignments, and unpaid overtime that quietly accumulates.

October is a good month to audit this because staffing patterns often change over summer, with seasonal workers joining and leaving. Check that every leaver was paid correctly and that their records are complete, because an enquiry about a worker who left months ago is much harder to answer.

Start year-end prep while it is cheap

Real-time information (RTI) reporting means there is no single P35 deadline any more, but the year-end still brings its own work: final payroll reconciliation, P60s, P11Ds for benefits, and reviewing whether any taxable benefits were missed during the year.

The biggest favour you can do yourself in October is to run a mid-year reconciliation of payroll totals against your general ledger. If PAYE, NICs, and pension deductions in your payroll software do not match what is in the accounts, the difference will not fix itself by April. Finding it now gives you six months to investigate; finding it in March gives you a deadline.

Pension auto-enrolment deserves the same treatment. Check that new starters were assessed and enrolled on time, that opt-outs were processed correctly, and that contribution rates match the scheme rules. The Pensions Regulator fines for auto-enrolment failures are real and they escalate, so this is not a box to leave unticked.

Document changes you have been meaning to make

Mid-year is when businesses often change payroll providers, move from spreadsheets to software, or bring payroll in-house. If any of that is on your agenda, October is far better than January for the transition, because you get a clean few months to settle in before the year-end pressure builds.

Whatever you change, keep the audit trail. Payroll is one of the few areas where HMRC can ask for records going back years, and "we changed systems" is not an excuse for missing data.

When payroll needs steadier hands

Payroll looks simple until it goes wrong, and then it is urgent, visible to every employee, and potentially expensive. If your October checks keep revealing the same weaknesses, late starters' data, manual workarounds, categories nobody quite understands, it may be time to get professional support.

Finex Outsourcing includes payroll within its financial accounting and outsourcing services for UK employers, handling the calculations, RTI submissions, and compliance checks as routine. A proper payroll function does not just pay people correctly; it keeps the evidence that you did.

Run your October checks this week. Your March self will thank you.